Seaming-machine



(ModeL) F. A. WALSH. v fleaming-Maohine. 34. Patented June 1,1880.

llll n WITNESSES |NVEN N,PE\'ERS PHOTO-LITHOGRAFHER WASHINGTON, D O.

UNTTED STATES ATEN FICE SEAMlNG-MACHINE.-

SPECIFICATION forming part of Letters Patent No. 228,234, dated June 1, 1880.

Application filed March 1, 1880.

To all whom it may concern:

Be it known that I, FRANCIS A. WALSH, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in seaming-Machines; and I hereby declare the following to be afull, clear, and exact description thereof, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawin gs, forming a part hereof, and in which' Figure 1 represents a front elevation; Fig. 2, a side view of the same; Fig.3, a plan view of the lever carrying the seaming-rollers. Fig. 4 represents an elevation of the stud or fulcrum of the seaming-lever, and Fig. 5 repre sents a seaming-lever provided with only two seaming-rollers.

Like letters of reference indicate like parts.

My invention relates to that class of seamin g-machines used for seaming the ends to the body of sheet-metal cans, and in which revolving disks are employed to hold the can during the process of seaming by means of friction contact-rollers and my invention consists in the combination of the several parts, as hereinafter more fully described and claimed.

In the drawings, A represents the standard of the machine, to one side of which is rigidly attached an arm, B, for the purpose of adjusting thereto the angle-piece O by means of the set-screw w, and upon which is worked the lever D on a fulcrum or stud, p.

The head of the stud p is expanded into a.

disk, from the lower side of which, near its circumference, projects a pin or stop, q, and into the upper side of lever D is cut a channel or groove, r, to receive the pin q of stud p. The stud 19 has a shoulder, a, which rests upon the angle-piece G, and prevents the head of stud p from pressing upon lever D when the nut 0 is tightened, thereby permitting ai'ree movement of the lever on its stud.

The lever D is provided with a series of seamiligrollers, a b 0, one of which (roller a) is provided with a groove cut into its circum ference. Rollers b and c are plain. bis set at an angle pointing downward to the plane of motion of the lever, and roller 0 pointing upward thereto.

G, H, and I show the successive operations Model.)

of the seaming-rollers a I) c, F showing the can and cover as prepared for the seamingmachine.

1; represents the bodyof the can; o, the flange; w, the cover thereof, shouldered at t, and formed with a burr, u.

On the under side of lever D, under roller 1), is cut a notch, forming a cam, t, against which the end of an arm, 6, presses, and near the upper end this arm 6 carries a disk or roller, d, the upper edge of which comes nearly in contact with roller 1) when the arm 0 rises in the cam 25.

The arm 6 is attached to a shaft, i, which is mounted on the adjustable angle-piece G, and to the other end of shaft i is attached a lever, f, the free end of which is raised by a spring,

' h, and the spring I1. is adjusted by the screwj in the lower end of the barrel or tube g.

Into the upper end of standard A is mounted a spindle, with its pulley is, to the lower end of which is firmly attached a removable disk,

Z, and into the bracket E on standard A is mounted a spindle, it, upon the upper end of which is loosely mounted a disk, 5. The axes of spindles k and n are in the same vertical line.

The upper end of spindle n is conically pointed, and upon it the disk 1 revolves freely, the spindle a being pivoted to a lever, m, by means of which it is raised and lowered in the bracket E. The hub of the disk Z is shown in section, so as to show its form and that of the end of spindle n.

The bearing of spindle 7c is shown broken away, and in Fig. 2 the spindle is also broken away, so as to show the leverD with its operatin g parts behind it, the lever D being turned into the same position as shown in Fig. l.

The operation of my improved seaming-machine is as follows: Disks land 1, constructed of a size to fit into the countersink of previously-stamped ends of the cans to be made, are selected, and disk 1 is firmly attached to spindle 7c and disk I, mounted upon spindle n. The ends are then placed against the body of a can and together mounted upon disk 1. Motion being given to disk I, the can is then raised against the disk Z by means of the lever on and caused to rotate with it by its frictional contact against the disk I. The lever D is then grasped at handle 8 and roller a brought for ward, so as to turn the burr of the stamped cover under the flange of the body of the can previously prepared therefor. When this operation is completed the lever D is pushed back until roller 1) and cam t are opposite the side of the can, which, with the roller (1 underneath, now pushing upward, with the force of the spring h acting on lever f, supports the upper edge of the can, while roller 1) turns down the flange ofthe can and its now united thereto cover over the roller d. When this operation is finished the lever D is pushed still farther back until roller 0 comes opposite the side of the can, which fully and completely turns the sea-m against the side of the body, and thus finishes the operation.

It will be observed that the cam t (shown dotted in Fig. 3) is simply a notch made deep enough to allow the arm 0 to press the disk up to a desired point under the flange of the can, and its use is only necessary when roller 1) is in use, and that arm 0 is depressed, and so takes roller d out of the way when either of the other rollers a or c are in use.

The lever D, as shown in Fig. 5, is provided with only two rollers,ct and b,and cam t, which is less expensive, and for some kinds of work more desirable.

The rollers a b d and cam tperform the same operations as before described; but the finishing work of roller 0 is performed equally well by the part of roller a below its groove, which, when so desired, may be made with a longer face.

The operation of stud 1), pin q, and slot 1' is as follows: The nutois first loosened, so that the stud may turn. A can is then placed upon the machine and roller a applied, as above described, the stud 12 having first been turned backward against the motion of the lever D, so that the end of slot r shall turn the pin 1), which will then determine the distance lever D should turn forward. Nut 0 is then tightened, which will hold the head of stud p from turning, and so pin q will act as P stop to the motions of lever D and prevent its being turned too far by carelessness or accident, and the length of slot 0' may be so arranged as to cause pin q to act as a stop for roller 0, when a three-roller leveris used to prevent unnecessary motion inthat direction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a seaming-machine, the combination of the standardarm B, adjustable bracket 0, lever D, provided with cam t, and carrying a series of two or more seaming-rollers, (o I) c, with the arm 6, carrying the rotary disk d, lever f, adjustable spring g, and rotary disks 1 and l, substantially as shown and described.

2. In a seaming-machine, the standard-arm B, adjustable bracket (l, lever D, provided with the groove 1", in combination with the 'stud 19, provided with pin or stop q, substantially as and for the purpose specified.

FRANCIS A. WALSH.

Witnesses:

WM. ZIMMERMAN, N. COWLES. 

